The United States lunar laser ranging program utilizes two observatories, one of which is atop Haleakala on the island of Maui, Hawaii. The Hawaii Institute of Geophysics has implemented a comprehensive geodetic-geophysical support program to monitor local and regional crustal deformation on the island of Maui. The program includes repeated geodetic laser surveys between the LURE Observatory and an island wide and inter-island networks, gravimetric surveys and first order levelling;also ocean tide gages, tiltmeters for monitoring the local vertical, and seismic surveil¬lance of crustal activity, (Carter et al., 1977;Berg and Sutton, 1977).nThis report describes the results of the first high-precision electronic dis¬tance measurements accomplished in the support program;the instrumentation used and instrument modifications, the procedures adapted, and the atmospheric conditions that preclude standard methods on long lines through an inversion layer.
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